Cotton-gin.



MIW. MARSDEN.-

COTTON GIN.

APPLICATION FILED MAY 20. 1M5. RENEWED NOV. 1. i917.

1,55,,Q7, Patented. May 7, 1918.

4 SHEETS-SHEET 1.

M. W. MARSDEN.

COTTON GIN.-

APPLLCAIION HLED MAY 20, 1915. RENEWED NOV. 1. 19!].

Patented May 7,1918.

4 SHEETSSHEET 2 vuwmtoq c Ii Zark W swam-66222;.

w. MARSDEN. COTTON GIN.

APPLICATION FILED MAY 20. 1915. RENEWED NOV- l. 1917- 1 ,265,47.Patented May 7,1918.

4 SHEETS-SHEET 3.

lvwauifoz 2% W/Ylaradeza.

Patented May 7,1918.

S EETS- HEET M. W. MARSDEN.

COTTON GIN.

APPLICATION man MAY 20. 1915. RENEWED NOV. 1.19:2.

MARK W. MABSDEN, 0F PHILADELPHIA, PENNSYLVANIA.

COTTON-GIN.

Application filed May 20, 1915, Serial No. 29,305.

To all whom it may concern:

Be it known that I, MARK W. MARSDEN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inCotton-Grins, of which the following is a specification.

In my former application, Ser. No. 29,155, from which issued Patent No.1,192,660, July 25, 1916, I have described and claimed a ginembodyingessentially a pair of confronting ginning aprons which cooperate withsuitable stripping mechanism to thoroughly and rapidly gin cottonwithout cutting, breaking or otherwise injuring the fiber. The presentimprovements while embodied in a machine of that general charac ter aremore particularly addressed to the stripping mechanism and to the meansfor removing the ginned cotton.

The nature, characteristic features and scope of the invention will morereadily be understood from the following description taken in connectionwith the accompanying drawings forming a part hereof and where- Figure 1is a perspective view of a cotton gin constructed in accordance with myinvention.

Fig. 2 is a sectional view, which includes the seed cotton feed, ginningdevices, and suction fines for removing the ginned cotton.

Fig. 3 is a detail of one of the ginning teeth.

Fig. 4: is a sectional view of a machine in which brush cylinders aresubstituted for the suction fines.

Fig. 5 is a perspective View of one of the grids and its complementalapron.

Figs. 6, 7 and 8 are details of the grids.

Fig. 9 is a sectional view of the grids and aprons showing how the teethare centered on opposed grids.

Fig. 10 is a perspective view of a modified structure wherein the gridsare shaped to conform to thetops of. the apron supports so as tofacilitate the feed.

Fig. 11 is a sectional detail of a 1nodification in which the grid bars.are provided with grooves, channels or ways for the points of theopposed apron teeth.

The frame may be of any appropriate form and will not be specificallydescribed.

The numeral 5 indicates the feed hopper in which the seed cotton isplaced to be op- Specification of Letters Patent.

vward or toward the seed discharge.

Patented May "Z, 1918.

Renewed November 1, 1917. Serial No. 199,799.

erated on by the machine. and well known means may be employed foraccelerating or regulating the feed, for example the cooperating feedrolls indicated at 6 mounted in bearings 7, which are adj ustable in thewell known manner to permit of adjustments of the rolls.

The hopper 5 is superimposed above the space formed by a pair of ginningaprons A and B, mounted upon apron supports or rolls C, which may bedriven in any suitable manner and are so disposed that the aprons travelin substantially vertical planes. The aprons are relatively adjustabletoward and away from each other in order to vary the distance betweenthem. This may be accomplished by some suitable provision, such forexample as the adjustable bearing boxes D, which accommodate the apronsupport journals E.

As fully explained in my application above referred to the aprons areconstituted of endless belts of canvas, leather or other stifi flexiblematerial, equipped with slats 8 that carry the ginning teeth 9 and alsoact as gear teeth or sprockets, which engage the teeth or corrugations10 of the apron supports or rolls. The aprons with respect to theirteeth are out of alinement so that the teeth are enabled to pass eachother freely, as shown in Figs. 9, 10 and 11.

The apron A is designed to be driven in a downward direction and itsteeth are so directed, which is the reverse of the teeth on the upwardlydriven or right hand apron B. The latter is intended to be driven at alower rate of speed than the downwardly traveling apron so that the'mainpull will be down- The purpose and efi'ect of this is to cause thecotton seized by the aprons to be turned over and over and subjected toa pull in opposite directions, which makes for a rapid loosening of theseeds from the staple without tearing or otherwise injuring the latter.

Each apron cooperates with a stripper, consisting, as shown in Fig. 5,of a slotted partition or grid F, which may be a unitary structure, forexample a single piece casting, or may be constituted of transverselyranging upper and lower framing sections 11,

carrying spaced grid sections or gratings 12. The separable arrangementis perhaps advantageous over the single piece structure in that theintervals, spaces, or ways 13 in which the ginning teeth travel may bead- Any suitable justed through the medium of distance pieces or spacingblocks 14 secured to place by for example the dowel pin arrangement 15shown in Fig. 6. The upright bars or grid sections 12 are detachablysecured to the framing sections 11 by screws or bolts 16. As will beobserved upon reference to Figs. Gland 9, the gratings 12 have bevelededges 17 to guide the ginning teeth and prevent the latter from binding.Fig. 9 especially, also illustrates how the oppo'sedteeth are centeredon the corresponding gratings. For the greater part of their travelthrough the grids the ginning teeth track or bear upon the gratings 12,which may present a plain or fiat surface, or, as illustrated in Fig.11, may be formed or provided with a groove, channel or recess 18 toaccommodate the points of the ginning teeth.

In order that the grids may be correspondingly shifted in accordancewith adjustments of the aprons and apron supports, the framing sections11 are equipped with endwise projections 19 which penetrate slots 20 insome stationary part of the machine and may be secured for example bywing nuts 21. I

The provision of the grids is advantageous because they extend from turnto turn of each apron and are effective for ginning purposes throughouttheir length.

G indicates a seed outlet of any appropri ate design; and H H indicateflues adapted to operate in conjunction with any suitable suctionapparatus to convey the giiined cotton away from the aprons. I V

In Fig. 4:, instead of the suction fiues I have illustrated brushordoffer cylinders I, which operate to remove the ginned cotton from therespective aprons and to discharge it upon endless belts or conveyers L.

The apron supports in addition to their to and fro adjustments forregulating the feed are also adjustable in the well known manner throughthe medium of their adjustable bearings D so as to take up slack andkeep the aprons stretched. I I may also provide the adjustable id'le'rsM, which as explained in my f'ormer application have rolling contactwith the aprons and in this case operate to hold the aprons well up tothe grids. j v s In Fig. 2, the numeral 22 indicates wings or plateswhich are hinged or otherwise adjustably secured to the hopper 5, andthe free ends of which rest loosely upon the tops of the grids andfollow the latter in their. adjustments and which operate as guides toproperly direct the seed cotton to the grids.

In Fig. 10 isshowna modification of the grid structure. In this examplethe tops of the grids F are shaped to conform to the apron turns, thatis to say they form almost a quarter turn around the apron supports andare then directed upwardly so that they constitute ineffect a throat orlicker-in.

The suction flues may be formed sepa rately or in part by the generalhousing 23. In any event, the latteris adapted and arranged to permitaccess to the fines, aprons, grids and other parts of the machine, Inaddition there may be doors-24 and windows or sight openings 25.

The seed outlet G is preferably pro ided with a gate or valve 26 inorder that the seeds may be detained in the region ofthe ginningmechanism until they are devoid of fiber.

It will be obvious tothose skilled inthe art to which the inventionrelates that modifications may be made in details vvithout departingfrom the spirit and scope of the invention. Hence the same is notlimited other than may be required by the prior art.

Having described the nature and objects equipped with ginning devices,means for" effecting relative adjustments thereof, a grid for eachapron, and means for adjusting the grids. I j i V a. In a machine of thetype recited, the combination of oppositely driven aprons equipped withginning devices, and grids intermediate the aprons and extending fromturn to turn thereof. I j p 5. Iii a machine of the type recited, thecombination of substantially vertically jdisposed opposed apronsequipped with gin- 'ning devices, and intermediate grids, one

for each apron, extending from turn to turn thereof. I

y 6. In a machine ofthe typerecited, the combination of substantiallyvertically disposed opposed aprons equipped with ginning devices, andintermediate grids extend in}; from turn to turn of the aprons curved atthe top to conform to the turn of the aprons. I v v A I 7 In a machineofthe type recited, the combination of substantially vertically disposedconfronting traveling aprons'equippged with ginnin teeth, and a grid foreach apron exten ing from turn to turn thereof and whereof thearrangement is such that the opposing teetliextend through one grid andare centered upon the other! 8. In a machine of the type recited, thecombination of substantially vertically disposed confronting travelingaprons equipped with cooperating ginning devices intermediate strippers,one for each apron forming a feed space for seed cotton, and means toreceive the ginned cotton.

9. In a machine of the type recited, the combination of substantiallyvertically disposed cooperating aprons equipped with ginning devices,stripping mechanism extending from turn to turn of the aprons, and

suction fiues cooperating With the aprons.

10. In a machine of the type recited, the combination of cooperatingaprons equipped with ginning devices, and opposed grids mounted Withrelation to the aprons and arranged to accommodate the ginning devices.

In testimony whereof I affix my signature 20 in presence of twoWitnesses.

MARK W. MARSDEN.

Witnesses:

H. A. HEGERTY, JAS. A. RICHMOND.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

